Microsoft co-founder Bill Gates today published an article on his Gates Notes website, proposing two novel suggestions: first, to levy a "robot tax" to slow down the pace at which machines replace human labor and to fund retraining and a stronger social safety net; second, to create "human-exclusive" jobs, prohibiting AI from being used in certain tasks to avoid mass unemployment and maintain human dignity, for example, robots should not deliver bad news in the medical field. Gates believes that the current tax system encourages companies to replace human labor with machines, and these two measures would help mitigate the negative social impacts brought by AI.